OG 2016 SC 2[Hurricanes] (at first) begin traveling / from east to west,because [that direction] is [the way / <the prevailing winds in the tropics> blow,]but /[they] (then) veer off toward [higher latitudes], / (in many cases) changing [direction] toward [the east] / before dissipating over [the colder, more notherly waters] or over [land].(A)[Hurricanes] (at first) begin traveling / from east to west, / because [that direction] is [the way / <the prevailing winds in the tropics> blow,] / but(B)At first, / [Hurricanes] travel / from east to west, / because / [that] is the direction of the prevailing winds in the tropics , / but /(C)While [hurricanes] travel from east to west at first, / [the direction of the prevailing winds / blowing in the tropics], / and / (SV…)(D)Because [hurricanes] (at first) travel from east to west, / since [it] is [the direction of the prevailing winds in the tropics], (SV…)(E)[Hurricanes], (beginning by traveling from east to west, / because this is the direction of the prevailing winds in the tropics), (SV…)◆正解 B◆訳ハリケーンはまず東から西へと移動する。熱帯地方における卓越風の風向きだからである。しかし、その後、より寒冷な北の海または陸上で消散する前に、多くのケースで東へと方向を変えつつ、より高緯度へと向かう。◆解き方1. まず文の主な構造をチェックし、(C)(D)(E)を消します。(A) Hurricanes begin…, because SV… BUT they(hurricanes) veer off….(B) Hurricanes travel…, because SV…, BUT they veer off….(C) While hurricanes travel… AND they veer off… 従属節のみで主節がありません。(D) Because hurricanes travel…, since it is…, / they veer off…. because節にsince節をつなげるのはawkwardです。「ハリケーンが東→西に移動する」から「その後より高緯度へと向かう」は論理的につながりません。(E) Hurricanes, / they veer off….文頭のhurricanesに対応する述語動詞と、その後の節とをつなげる接続詞が必要です。2. (A)と(B)を比較します。・(A) [at first begin]は「最初に（移動を）始める」となり、redundantです。・(A) [that direction] is [the way / <the prevailing winds in the tropics> blow](B) [that] is the direction of the prevailing winds in the tropics]ほぼ同じ内容を示しています。(A)は余計な言葉が多いです。(A)に文法上の誤りはありませんが、「redundantかつwordy」なので(B)の方がbetterと考えられます。